648008 has 8 divisors (see below), whose sum is σ = 1215030. Its totient is φ = 324000.

The previous prime is 648007. The next prime is 648019. The reversal of 648008 is 800846.

It can be written as a sum of positive squares in only one way, i.e., 438244 + 209764 = 662^2 + 458^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (648007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40493 + ... + 40508.

2⁶⁴⁸⁰⁰⁸ is an apocalyptic number.

It is an amenable number.

648008 is a deficient number, since it is larger than the sum of its proper divisors (567022).

648008 is a wasteful number, since it uses less digits than its factorization.

648008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81007 (or 81003 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 648008 is about 804.9894409245. The cubic root of 648008 is about 86.5353303280.

It can be divided in two parts, 64800 and 8, that multiplied together give a square (518400 = 720²).

The spelling of 648008 in words is "six hundred forty-eight thousand, eight".